Hi, to be honest, this is a good advice to me (small database, I should say better very small database 2GB-4GB) It works for me and is really nice, but I understand it can cause problems in big database, I understand your position. Anyway I think my advice is good, I'll bother Tom Kyte, to get an official opinion from Oracle and I'll come back to continue with the discussion. -- //www.freelists.org/webpage/oracle-l